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I have a 1998 Jeep , with manual transmission . It sifts OK , but , I loose power on the slightest incline . Could this be a faulty EGR valve , or something else ? THANKS

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  • Anonymous Dec 28, 2008

    mine does this to i dont know what it iss grr

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  • Jeep Master
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Sound like your clutch may be slipping going up hills?? does it rev up when you go up hill?? and slows down??

Posted on Jul 17, 2008

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Noise either from the engine or transmission


check for a loose heat sheild on exhaust system usually on top of catalytic converter....happened to me

Jan 20, 2014 | 1998 Jeep Grand Cherokee

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I have a 1998 ford escort with a check engine light on and can't get it off


Here is a list of possible causes. Some things you have already done.

EGR solenoid valve harness is open or shorted
- EGR solenoid valve circuit poor electrical connection
- EGR volume control valve stuck closed
- Faulty EGR Pressure sensor
- Faulty EGR temperature sensor and circuit
- Faulty EGR Valve
- EGR passage clogged
- Exhaust gas leaks
Read more: http://engine-codes.com/p0401_ford.html#ixzz28fATCih2

Oct 07, 2012 | 1998 Ford Escort

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2001 pathfinder loosing power while driving


run compression test chech ht leads,

Mar 22, 2012 | 2001 Nissan Pathfinder

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My 1998 jeep grand cherokee will cut on and 5 seconds later, it will cut off??? any suggestions? and i looked on some forums and thought it could be the O2 sensor or crankshaft sensor?


It is also a possibility. Check if you have rough idling when you do get the engine running and check if can keep it running if you step on the gas. You may have a dirty idle air control valve. Check also for loose vacuum lines and wiring as well. If you have a spare carb cleaner, have it sprayed in to the intake of the engine while revving. There might be just dirt in the system or the MAF sensor.

If you can, have a scanner connected to the car. It may have errors stored in its computer.

Aug 22, 2011 | 1998 Jeep Grand Cherokee

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I have a code P0401. What is this and how can I fix it?


P0401 - Exhaust Gas Recirculation Flow Insufficient Detected

Possible causes - Harness or connectors (EGR volume control valve circuit is open or shorted.)
- EGR volume control valve stuck closed
- EGR volume control solenoid valve
- Dead (Weak) battery
- EGR passage clogged
- Exhaust gas leaks Possible solution - Clean EGR Valve
- Repair EGR harness or connector
- Replaced EGR volume control solenoid valve
- Replaced EGR volume control valve

Mar 20, 2011 | 1998 Ford Taurus

1 Answer

OBDII SETS CODES P0401, P0171 & P0174 . 1998 Mercury Sable


P0401- Exhaust Gas Recirculation Flow Insufficient Dectected
Possible causes - Harness or connectors (EGR volume control valve circuit is open or shorted.)
- EGR volume control valve stuck closed
- EGR volume control solenoid valve
- Dead (Weak) battery
- EGR passage clogged
- Exhaust gas leaks Possible solution - Clean EGR Valve
- Repair EGR harness or connector
- Replaced EGR volume control solenoid valve
- Replaced EGR volume control valve
Code P0171- Fuel Injection System Too Lean Bank 1 Possible causes - Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connection Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem P0174- Fuel Injection System Too Lean Bank 2 Possible causes - Intake air leaks
- Front Heated oxygen sensor may be faulty
- Injectors may be faulty
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Mass air flow sensor may be faulty
- Incorrect PCV hose connection Possible solution Dirty air filter of faulty air flow sensor are common causes of the problem.

Jun 28, 2010 | 1998 Mercury Sable

2 Answers

What does a PO401 means for a 1998 Mercury Sable


P0401 OBD-II Trouble Code - Insufficient EGR Flow

What does that mean?
EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR.

Symptoms
You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms.

Causes
A code P0401 most likely means one or more of the following has happened:
* The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
* There is a blockage in the EGR (tube), most likely carbon buildup
* The EGR valve is faulty
* The EGR valve may not be opening due to a lack of vaccuum

Possible Solutions
In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.
* Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
* Clean out the EGR valve and/or tubing to remove deposits
* Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
* Replace the DPFE sensor (with a good quality / OEM one)
* Replace the EGR valve

Hope this help to solve it; remember comment and rated this help. TY for using Fixya.

May 06, 2010 | 1998 Mercury Sable

1 Answer

Transmission not sifting correctly


Automatic transmission? Check the pressure on the transmission. That really sounds like the pump has gone south on an automatic transmission.

Mar 11, 2010 | 1998 Toyota Corolla

1 Answer

1993 jeep grand cherokee, choking, pulling then stalled,


Check:
- Fresh Air Intake Hose: Clogged or Damaged FreshAir Intake Hose.
- Carburetor: Worn, Faulty or Damaged Carburetor.
- Mass Air Flow Sensor: Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
- EGR Valve: EGR Valve Sticking Open/Leaking.
- Idle Air Control Valve: IAC Valve Sticking or Faulty.

Good luck.

Aug 02, 2009 | 1993 Jeep Grand Cherokee

1 Answer

Advice on idling problem


Priority Action Part Type Cause 1 Inspect Hose (Vacuum) Misrouted, damaged, loose, or clogged vacuum hose(s) grey_line.gif 3 Inspect Choke Pulloff Worn, defective, or faulty choke pulloff(s). grey_line.gif 4 Inspect Hood Brace Leaking, worn, or damaged intake manifold gasket grey_line.gif 5 Inspect Choke Thermostat Stuck or improperly functioning choke thermostat. grey_line.gif 6 Inspect Carburetor/Fuel Injection Gsk Deteriorated, or faulty carburetor/throttle valve mounting gasket. grey_line.gif 7 Inspect EGR Valve Clogged, dirty or improperly functioning or defective egr valve. grey_line.gif 8 Inspect Idle Air Control Valve Damaged, loose, or faulty idle air control valve. grey_line.gif 9 Inspect Idle Speed Control Actuator Damaged, loose, or faulty idle speed actuator. grey_line.gif 10 Inspect Idle Stop Solenoid Damaged, loose, or faulty idle stop solenoid. grey_line.gif 11 Inspect Throttle Position Sensor Faulty throttle position sensor or throttle position sensor circuit. here the answer to ur problem use autozone.com if this does not workor u need more info here to help Shaun

Nov 17, 2008 | 1997 Dodge Neon

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